Valve spring compressor



Sept. 18, 1934.

P. I91. MILL-ER VALVE" srnme COMPRESSOR Filed Oct. 25. 1935 ATTORNEYPatented Sept. 18, 1934 VALVE SPRING COMPRESSOR Paul M. Miller,Bloomfield, N. J. Application October 25, 1933, Serial No. 695,169

1 Claim.

This invention relates to valve spring tools and has for the primaryobject the provision of a device of the above stated character which issimple and convenient to operate and self-retaining to maintain a valvespring compressed so that the operator may have use of either or bothhands to remove and replace a key to the valve and the device also maysuccessfully operate on several valves from a single adjustment thereofto the engine block.

With these and other objects in view this invention consists in certainnovel features of construction, combination and arrangement of partstobe hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawing, in which Figure 1 isa side elevation, partly in section, illustrating a valve spring toolconstructed in accordance with my invention and showing the same appliedto a valve and cylinder block of an engine.

Figure 2 is a detail view illustrating the connection between a pair ofsupporting arms and a rack bar.

Figure 3 is a fragmentary plan view illustrating the supporting arms.

Figure 4 is a fragmentary plan view illustrating the jaw carried by theoperating lever.

Figure 5 is a fragmentary sectional view illustrating the same appliedto a valve stem.

Referring in detail to the drawing, the numeral 1 indicates a pair ofsupporting arms connected at one end by a pivot 2 and provided with aseries of openings 3 whereby said arms may be positioned upon a cylinderblock 4 of an engine with the stud bolts 5 employed for connecting thecylinder head to the block passing through certain of the openings. Ahead 6 is journaled upon the pivot 2 and includes spaced ears '7 betweenwhich is pivoted one end of a rack bar 8 and the lower end of the latteris bifurcated to provide spaced ears 9 between which operates a lever10. The ears 9 are provided with a series of aligned openings l1 and thelever 10 is provided with a series of openings 12. A pivot pin 13 isemployed for connecting the lever 10 to the ears by extending throughapertures 11 and 12. The arrangement of the apertures 11 and 12 permitsthe lever to be raised and lowered and moved towards and from the block4. The outer end of the lever carries a handle 14 and also a pivoted dog15 adapted to co-act with the teeth of the rack bar for holding thelever in adjusted position. The inner end of the lever is flattened toform a jaw 16 provided with a key-hole slot 17, the latter openingoutwardly through the end of the jaw. Flanges 18 are formed on the sidesof the jaw and one end of the latter.

These flanges project above the upper face of the jaw and cooperate withsaid face in receiving the lower convolution of a valve spring 19employed for seating the valve 20 of the cylinder block 4.

engaging the teeth of the rack bar.

The operators hands are then free to remove the key 21 from the valvestem. With the key removed from the valve stem, the valve may then bereadily moved out of the block 4.

After the replacement of the valve and key the spring 19 may be releasedby disengaging the dog from the rack bar.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of my invention, as claimed.

Having described the invention, I claim:

A valve tool comprising supporting arms having openings to receive headbolts of an engine, a pivot connecting the arms in diverging relation,2. head journaled to the pivot, a rack bar pivoted to the head, a leverpivotally and adjustably connected to the rack bar, a handle for thelever, a dog pivoted to the lever for coaction with the rack bar, saidlever having one end flattened and provided with a key hole slot to forma jaw to receive a valve stem in the slot and to engage a convolution ofa valve spring with its upper face, and a flange on the flattenedportion to cooperate with the upper face thereof in forming the seat forthe convolution of the spring.

PAUL M. MILLER.

